The polyketide synthase (PKS)‐like protein TerB, consisting of inactive dehydratase, inactive C‐methyltransferase, and functional ketoreductase domains collaborates with the iterative non reducing PKS TerA to produce 6‐hydroxymellein, a key pathway intermediate during the biosynthesis of various fungal natural products. The catalytically inactive dehydratase domain of TerB appears to mediate productive interactions with TerA, demonstrating a new mode of trans‐interaction between iterative PKS components.
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Kahlert et al. (2021) studied this question.
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